Ivo Geradts a écrit :
As a plainTeX user, I am currently experimenting with your macro packages that 
transfer ConTeXt's luatex functionality to plainTeX (and LaTeX). You have done 
a wonderfull job. In my first experiments with luaotfload I managed to use the 
special features of the Zapfino font; I have still to dig deeper, but it all 
looks very promising.

Hello,

For all those packages, the best mailing solution is [email protected] (in copy), on which you'll find all the authors of the packages you'll be using.

\input luamplib.sty

aaa bbb
\mplibcode
        beginfig(1);
        draw fullcircle scaled 2cm;
        endfig;
\endmplibcode
ccc ddd

\bye

I get an error message:

! LuaTeX error ...e/2009/../texmf-tat/tex/luatex/luamplib/luamplib.lua:74: bad argument #2 to 'format' (string expected, got nil)
stack traceback:
        [C]: in function 'format'
        ...e/2009/../texmf-tat/tex/luatex/luamplib/luamplib.lua:74: in function 
'log'
        ...e/2009/../texmf-tat/tex/luatex/luamplib/luamplib.lua:128: in 
function 'load
'
        ...e/2009/../texmf-tat/tex/luatex/luamplib/luamplib.lua:170: in 
function 'proc
ess'
        <\directlua >:1: in main chunk.
\mplibprocess ...ectlua {luamplib.process([[#1]])}
l.8 \endmplibcode

As you can see, I am running LuaTeX 0.61.0-2010072816. I use luamplib 1.04, 
dated 2010/08/02. Is there a known incompatability?

luamplib uses luatexbase, the error may come from an outdated one. I think you should try to update it.

 Or may this error be caused by missing mem-files? I have no mem-files 
installed at the moment.

No, it should work anyway.

 I tried to generate one with luamplib-createmem.lua script, but it did not 
generate any files.

What is the output of the command?

 As you wrote the documentation:

These .mem files are not mandatory though. If this package doesn’t find the mem 
files, it will just input the .mp file, and work without problem; the only 
difference is that it may be a bit slower but this is not noticeable on a 
modern computer.

I concluded that it is also possible to work without mem-files, but I may be 
wrong. Any help would be much appreciated. Thanks in advance.

It is, normally...

Thank you,
--
Elie

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